AP Biology: Unit 4 Review

Front

What are the three parts of a signal transduction pathway?

Back

Reception, Transduction, Response

Front

Which of the following is NOT involved in the transduction step?

Back

Ligands

Front

Describe the reception stage of the signal transduction pathway.

Back

Epinephrine binds to a G-protein coupled receptor protein present in the cell membrane.

Front

What is the result of mitosis?

Back

2 identical diploid cells.

Front

Which of the following is NOT a role of mitosis?

Back

Gametes.

Front

What is signal transduction?

Back

The process by which a cell responds to substances in its environment through a series of molecular events.

Front

What role do secondary messengers play in signal transduction?

Back

They amplify the signal within the cell after the initial receptor activation.

Front

What is the function of a G-protein in signal transduction?

Back

To relay signals from activated receptors to target proteins inside the cell.

Front

What is the significance of phosphorylation in signal transduction?

Back

It activates or deactivates proteins, thereby regulating cellular processes.

Front

What is the difference between mitosis and meiosis?

Back

Mitosis results in two identical diploid cells, while meiosis results in four unique haploid cells.